What is the derivative of f(x) = 9x^4 + 3x + -2?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: B. 36x^3 + 3.
- A. 36x^3
Why not A: “36x^3” is not 36x^3 + 3.
- B. 36x^3 + 3 ✓
- C. 9x^3 + 3
Why not C: “9x^3 + 3” is not 36x^3 + 3.
- D. 36x^4 + 3
Why not D: “36x^4 + 3” is not 36x^3 + 3.
Correct answer
B. 36x^3 + 3
Explanation
36x^3 + 3 is the value that answers “What is the derivative of f(x) = 9x^4 + 3x + -2” (option B). Option A (36x^3) is a different value from 36x^3 + 3. Option C (9x^3 + 3) is a different value from 36x^3 + 3. Option D (36x^4 + 3) is a different value from 36x^3 + 3. Keep 36x^3 + 3 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Derivatives, derivative MCQ, derivative of 5x^3 + 8x + 9, derivative calculation MCQ, find derivative MCQ, derivative questions
Submitted by: MCQsHub Editorial